PROCESS EQUIPMENT UPDATE


ACTUATOR UPGRADE T


he Nokianvirran Energia biomass power plant in Finland has significantly increased its degree of


automation and thus maximised process efficiency by retrofitting electric actuators made by Auma. Nokianvirran Energia Oy built a


steam cogeneration plant in Nokia in 2016. The plant uses renewable wood-based fuels from the region. It produces process steam for a paper mill and a tyre manufacturing plant, as well as district heating for a large energy company. Auma experts learned that it


took around 30 minutes to start up the boiler from zero to full power, using valves that had to be operated manually. The plant operator’s desire for more automation led to Auma’s multi-turn actuators with intelligent AC 01.2 actuator controls being added


Auma actuators in a biomass plant


during the overhaul in 2022. The actuators now enable the


system to be started up in just six minutes. Thanks to Profibus interfaces in the actuator controls, the actuators are remotely controlled with Profibus DP from the central control room. In areas subject to heavy vibration or high process


A new batch of electric actuators now automate previously manually operated valves in a biomass power plant


temperatures, the actuator controls were mounted on wall brackets at a distance from the actuators to protect the electronics. The Auma team


took care of the project management, including on-site data acquisition to planning, order processing, installation and commissioning.


Thanks to tailor-made adapters the actuators could be perfectly adapted to the existing valves with only minor field modifications.


For more information visit: retrofit.auma.com


www.engineerlive.com


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